Simulation of vocal fold oscillation behaviour by a self-oscillating glottis model

Abstract
As a good compromise between simplicity and approximation of real human vocal vold oscillation behaviour the Ishizaka-Flanagan two-mass model [1] is widely used in articulatory speech synthesis. But its poor results in modelling the oscillatory behaviour during glottal abduction/adduction and in modelling leakage flow during normal phonation are drawbacks. The two-mass model can be improved without increasing its complexity, if a non-oscillating and aperture-dependent bypass is added.